s&p down 4. >>> ben bernanke thinks congress should raise the debt ceiling. that was the message, the federal reserve chairman delivered -- delivered at the university of michigan. he said congress needs to act quickly. they want to avoid a credit rating change and that could affect the economy. >>> the cold weather definitely having an impact on the central valley which grows about 8% of the country's fruits and vegetables. one family farm is in newcastle, california. that's about off 80 on the way to tahoe. farming is a tricky business. now, this cold weather is actually good news for their crop of mandarins but only to a point. >> whatever doesn't kill them makes them sweeter. so if you can get the mandarins as close to frozen as you can but not frozen, the trees push sugar into the fruit and it increases the quality of the fruit. >> analysts say orange and lemons are most vulnerable. that means higher prices. strawberries, avocados, affected as well. for avocado, one farmer says if the trees get damaged production is down for the whole year. in the next h